Finding the Fourth Proportional to 128,029.80, 176,652.86 and 74,283.69
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Solution
The fourth proportional to 128,029.80, 176,652.86 and 74,283.69 is: 102,495.09
Step by Step Solution
- Step 1: Write the proportion equation
128,029.80 : 176,652.86 = 74,283.69 : x - Step 2: Convert to fraction form
128,029.80/176,652.86 = 74,283.69/x - Step 3: Cross multiply
128,029.80x = 176,652.86 × 74,283.69 - Step 4: Simplify right side
128,029.80x = 13,122,425,918.44 - Step 5: Solve for x
x = 13,122,425,918.44/128,029.80 - Step 6: Final answer
x = 102,495.09
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.